Unable to submit to proceedings

I am speaking in Pittsburgh next month, but I can’t seem to create a submission to the proceedings.

I logged in to the site via ORCID, fully filled out the form, checked the confirmation boxes, and, when I click “Submit paper,” nothing happens. This is true in both Vivaldi and Safari in macos.

Then I go to the About page and see a link inviting me to create an issue as a pre-submission inquiry. So I submit an issue and…a bot immediately closes it as invalid.

Can anyone help?